Packing rubber



March 11 1924. 1,486,420

E. v. CROWEL].

PACKING RUBBER Original Filed Aug. 13, 1921 INVENTOR [CROW/ELL,

. ATTORNEYS Patented Mar. ll,

nan v. CBOWELL, or

rncn'rns To all 107mm it may concern:

Be it known that 1, Elm V. CRowELL, a citizen of the United States, and a resident of Tulsa, in the county of Tulsa and State of Oklahoma, have invented certain new and useful Improvements in Packing Rubbers, of which the following is a specification.

The present invention relates to an improved rubber utilized in conjunction with the tubing oil saver forming the subjectinatter of my co-pending application, Serial No. {92,056 filed Aug. 13, 1921, now Patent Yo. 1,472,555, dated October 30, 1923, and the present application is a division of the said application.

The object of'the invention is to provide an improved rubber of this character which adapted to effectively engage the tubing of the oil well to efliciently pack the same, no disk being so constructed as to be endowed with afcapacity so as to flex to permit of the passage of the couplings of the tube and yet at the same time to present suflicient-strength to withstand the pressures of the oil and gas exerted thereupon.

Another object is to provide a rubber of this character which is susceptible of being selectively moved into packing engagement with the tubing and out of packing engagement and away from the tubing.

lznother object is to provide av rubber of this character which is of generally simple and durable construction, reliable in operation and easy and inexpensive to manufacture and replace.

ilther objects and advantages of the invention reside in certain novel features of construction. combination and arrangement of parts, which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification, and in which:

Figure 1 .is a plan view of the preferred embodiment of the invention; and

Figure 2'is a view thereof in transverse vertical section. v

Referring to the drawings wherein for the sake of illustration is shown the preferred embodiment of the invention, the numeral 10 designates generally the rubber which takes the form of a disk and which includes metrical so that each forms a half of the disk.

sectional ori ice,

TULSA, OKLAHOMA.

RUBBER.

492,058. Divided and this application filed October In crosssection, the disk comprises an outer ring or body 13 of rectangular cross section having a series of openings 1% therethrough constituting bolt holes or openings. inwardly of the ring portion 13 the disk is provided with an elastic portion 16 which in cross section takes the form of a trapezium. The major parallel side of the 4 ezium is adjacent the ring 13 and the minor parallel side thereof constitutes the inner periphery of the ring, it being understood of course that the flexing portion 16 and the ring portion 13 are integral in their res ective sections. By thus forming the o nortion it tapers on both its upper and lower faces inwardly so that this upper and loner face converge toward each other and that the cross section of the flexing maximum fiexion and strength.

.ln use, the rubber disk is susceptible, by virtue of its sectional construction, of being readily moved into contacting engagement with the tubing or of being moved out of pack engagen'ient with and away from the tu ing. When engaged with the tubing it prevents the escape of oil or gases between it and the tubing and yet at the same time its flexing portion 16 permits of the passage of the couplings of the tubing, this ing action beingenhanced by the construction of: the disk.

claim: in a device of the character described, a rubber member including sections and comprising peripheral ring portion of retangnlarhross section and an inner flexing portion integral with the ring portion and taking the form of a trapezium in cross section with the major parallel side of the trapezium adjacent the ring portion and the minor side thereof constituting the inner peripheral face of the member, all as and for the purposes set forth.

2. in a device of the character described, a rubber member including sections and comprising an outer ring portion and an inner flexing; portion tapered from the ring D ticn toward the inner periphery of the member nd symmetrically formed with respect to the plane of the ring portion, said inner portion having a packing surface which constitutes the inner peripheral surface of the member.

ERD V. CROWELL. 

